forked from Minki/linux
ARM: at91: sama5d3xek: reserve dma channel for audio
We set the DMA configuration on USARTs in the SoC DT in (ARM: at91: sama5d3: add usart dma configurations). As the audio must work with DMA channels, we reserve some dma channels for audio, or else audio won't work. Signed-off-by: Bo Shen <voice.shen@atmel.com> [nicolas.ferre@atmel.com: move to the sama5d3xmb.dtsi to cover all board variants] Signed-off-by: Nicolas Ferre <nicolas.ferre@atmel.com>
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@ -25,6 +25,8 @@
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};
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spi0: spi@f0004000 {
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dmas = <0>, <0>; /* Do not use DMA for spi0 */
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m25p80@0 {
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compatible = "atmel,at25df321a";
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spi-max-frequency = <50000000>;
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@ -51,6 +53,7 @@
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};
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usart1: serial@f0020000 {
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dmas = <0>, <0>; /* Do not use DMA for usart1 */
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pinctrl-names = "default";
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pinctrl-0 = <&pinctrl_usart1 &pinctrl_usart1_rts_cts>;
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status = "okay";
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@ -132,6 +135,7 @@
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};
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dbgu: serial@ffffee00 {
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dmas = <0>, <0>; /* Do not use DMA for dbgu */
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status = "okay";
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};
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